﻿// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
// Copyright (c) 2011, Dr. Masroor Ehsan
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the author nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// $Author: masroore@gmail.com $
// $Id: ContractBuilder.cs 37 2011-10-21 15:00:21Z masroore@gmail.com $
// $Rev: 37 $
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

using System;
using CuttingEdge.Conditions;

namespace MaxTrader.BusinessObjects
{
    public class ContractBuilder : IFluentBuilder<Contract>
    {
        protected internal DateTime date;

        protected internal decimal price;
        protected internal decimal quantity;

        protected internal DateTime? referenceDate;
        protected internal decimal? referencePrice;
        protected internal Stock stock;
        protected internal ContractType type;

        public ContractBuilder(Stock stock) : this(stock, DateTime.Now)
        {
        }

        public ContractBuilder(Stock stock, DateTime date)
        {
            Condition.Requires(stock, "stock").IsNotNull();
            Condition.Requires(date, "date").IsInRange<DateTime>(DateTime.MinValue, DateTime.MaxValue);

            this.stock = stock;
            this.date = date;
        }

        #region IFluentBuilder<Contract> Members

        public Contract Build()
        {
            return new Contract(this);
        }

        #endregion

        public ContractBuilder Type(ContractType type)
        {
            Condition.Requires(type, "type").Evaluate(x => x == ContractType.Buy || x == ContractType.Sell);

            this.type = type;
            return this;
        }

        public ContractBuilder Quantity(decimal quantity)
        {
            Condition.Requires(quantity, "quantity").IsGreaterThan(0);

            this.quantity = quantity;
            return this;
        }

        public ContractBuilder Price(decimal price)
        {
            Condition.Requires(price, "price").IsGreaterThan(0);

            this.price = price;
            return this;
        }

        public ContractBuilder ReferencePrice(decimal? refPrice)
        {
            Condition
                .Requires(refPrice, "refPrice")
                .IsNotNull()
                .IsGreaterThan(0);

            referencePrice = refPrice;
            return this;
        }

        public ContractBuilder ReferenceDate(DateTime? refDate)
        {
            Condition
                .Requires(refDate, "refDate")
                .IsNotNull()
                .IsInRange(DateTime.MinValue, DateTime.MaxValue);

            referenceDate = refDate;
            return this;
        }
    }
}